Electrical question

i am running one viair 450 on a 5gallon tank right now, but i want to add another tank so i just bought a 450 twin pack. What electronics need to be upgraded to run 3 compressors and my system? I was thinking about buying a 200AMP alternator, but will an extra battery be better?

I know the stock system can handle 2 but I've never tried 3. If you are going to upgrade, I would start with an extra battery first but I don't know how much you play with your system. Another Battery should be able to handle it though as long as you don't run your compressors all the time when ever you drive.

ill probably run 2 compressors for now and then get an extra battery and run 3, but i like to have my system on and i cant get enough of my switches so ill probably end up putting the alternator in down the road